CB750A Automatic '76-'78 PD44 and PD43
These carbs are basically the same style for all years of the CB750A Automatic '76 (Marked PD44A), CB750A '77 (marked PD44B) and the CB750A '78 (marked PD43A). Even though they are easily interchanged, you do not want to mix and match the internals. They all physically fit all three years, but are not the same due to tuning and parts differences. Even though they appear to work on the CB550K '77-'78 they will not work properly on a 550 OR visa-versa.
